I haven't posted here in a while but wanted to give some information on developing your voice.
First off I spent the money on a GOOD voice coach who understands transgender voice therapy. The person I used is Mavis Ivy in Atlanta (678-592-0052). I'm sure there are many others who can provide this service.
First she gave me some simple things to practice to learn how to move my voice from my throat to my head. Some of it seemed very silly but it worked. That is something you MUST learn to do first step to sound even remotely female. Good breathing is important too and learning to add some breathyness/less stacato sound to your voice is also something needed. Think -smoooth-.
Then we worked on lists of words, dealing with ones I would trip on in conversation, then short phrases and moved onto intonation etc. It takes a --LOT-- of practice to smooth out your voice. You have to record yourself and listen. You can do this practice in traffic etc so it doesn't kill a bunch of your time. I've recently starting using some software called -sing and see- when at home practicing (student version is fine and is $50) which lets you SEE where your voice is along with a key board to help you find your range. A tuner device like used for tuning a guitar can help too, I got one off ebay for $10 shipped. I'm around an octave higher (middle C) mid point compared to my guy voice, which wasn't hard for me to move to.
For us, raising your pitch a bit also helps smooth out the resonance, but mainly this is done by moving your voice into your head from your throat. You do have to leave room to raise and lower pitch for intonation so don't try to get too high and end up monotone. You should aim to keep the volume the same and use -pitch raise- for emphasis. Spend time listening to different women to learn their speech patterns and how they are different than a mans. You really do have to think and learn to talk all over again. No voice surgery is going to change your speech pattern which is a major part of this. I've been working on mine for about 3 months now (practice daily, plus I have been full time for a few years so get to practice my new voice a lot) and am very happy with the progress.
I see SOOOOO many really pretty trans girls, but they sound like a truck driver, and they can't understand why they have problems integrating into society. The disconnect between their appearance and what they sound like is disturbing even to me. I've seen a HUGE boost both to my own self confidence and other people's reaction to me in public. I'm ma'amed 100% of the time on the phone and drive thru's etc. I can not stress enough how important this is to a successful transition. So many people will spend $10,000+ and hundreds of hours on electrolysis, another 40K on mega facial surgery but then refuse to spend anything on their voice. If your voice is good, no one will ever notice if you have a few physical flaws as far as passing. I feel it's a combination of -reasonable- appearance, sound and mannerisms that will allow you to be accepted as just another woman. It doesn't matter what your ID says if you aren't just seen as a woman without having to pull out your ID to prove it.
OK (drumroll) here is a short clip of my voice. This was done with a cheap headset and I still plan to keep working on my voice but I could live with it if it never improved from this.
http://atlantaracing.tripod.com/funky/my_voice.mp3